/*
  TODO: Further optimize serialize function

  UPDATE: We were forced to create an individual XHR for each request
  to avoid race conditions on slower browsers where the request would
  be overwritten before the callback triggered, and leave it hanging.
  This only happened in FF3.0 that we tested.

  Example usage 1:
  ajax.handle = function () {
    $('#preview' + postid).raw().innerHTML = ajax.response;
    $('#editbox' + postid).ghide();
  }
  ajax.post("ajax.php?action=preview","#form-id" + postid);

  Example usage 2:
  ajax.handle = function() {
    $('#quickpost').raw().value = "[quote="+username+"]" + ajax.response + "[/quote]";
  }
  ajax.get("?action=get_post&post=" + postid);

*/
'use strict'
var json = {
  encode: function (object) {
    try {
      return JSON.stringify(object)
    } catch (err) {
      return ''
    }
  },
  decode: function (string) {
    if (window.JSON && JSON.parse) {
      return JSON.parse(string)
    } else {
      return eval('(' + string + ')')
      //return (new Function("return " + data))();
    }
  },
}

var ajax = {
  get: function (url, callback) {
    var req =
      typeof window.ActiveXObject === 'undefined' ? new XMLHttpRequest() : new ActiveXObject('Microsoft.XMLHTTP')
    if (callback !== undefined) {
      req.onreadystatechange = function () {
        if (req.readyState !== 4 || req.status !== 200) {
          return
        }
        callback(req.responseText)
      }
    }
    req.open('GET', url, true)
    req.send(null)
  },
  post: function (url, data, callback) {
    var req = isset(window.ActiveXObject) ? new ActiveXObject('Microsoft.XMLHTTP') : new XMLHttpRequest()
    var params = ajax.serialize(data)
    if (callback !== undefined) {
      req.onreadystatechange = function () {
        if (req.readyState !== 4 || req.status !== 200) {
          return
        }
        callback(req.responseText)
      }
    }
    req.open('POST', url, true)
    req.setRequestHeader('Content-type', 'application/x-www-form-urlencoded')
    req.send(params)
  },
  serialize: function (data) {
    var query = '',
      elements
    if (is_array(data)) {
      for (var key in data) {
        query += key + '=' + encodeURIComponent(data[key]) + '&'
      }
    } else {
      elements = document.getElementById(data).elements
      for (var i = 0, il = elements.length; i < il; i++) {
        var element = elements[i]
        if (!isset(element) || element.disabled || element.name === '') {
          continue
        }
        switch (element.type) {
          case 'text':
          case 'hidden':
          case 'password':
          case 'textarea':
          case 'select-one':
            query += element.name + '=' + encodeURIComponent(element.value) + '&'
            break
          case 'select-multiple':
            for (var j = 0, jl = element.options.length; j < jl; j++) {
              var current = element.options[j]
              if (current.selected) {
                query += element.name + '=' + encodeURIComponent(current.value) + '&'
              }
            }
            break
          case 'radio':
            if (element.checked) {
              query += element.name + '=' + encodeURIComponent(element.value) + '&'
            }
            break
          case 'checkbox':
            if (element.checked) {
              query += element.name + '=' + encodeURIComponent(element.value) + '&'
            }
            break
        }
      }
    }
    return query.substr(0, query.length - 1)
  },
}
//Bookmarks
function Bookmark(type, id, newName) {
  var bmLinks = $('#bookmarklink_' + type + '_' + id + ', .bookmarklink_' + type + '_' + id)
  var oldName = newName && bmLinks.html()
  ajax.get('bookmarks.php?action=add&type=' + type + '&auth=' + authkey + '&id=' + id, function () {
    bmLinks.parent('.remove_bookmark, .add_bookmark').toggleClass('add_bookmark remove_bookmark')
    if (newName) {
      bmLinks.html(newName)
    }
    bmLinks
      .removeAttr('onclick')
      .off('click')
      .click(function () {
        Unbookmark(type, id, oldName)
        return false
      })
  })
}

function Unbookmark(type, id, newName) {
  if (window.location.pathname.indexOf('bookmarks.php') != -1) {
    ajax.get('bookmarks.php?action=remove&type=' + type + '&auth=' + authkey + '&id=' + id, function () {
      $('#group_' + id).remove()
      $(`[group-id="${id}]`).remove()
      $('.bookmark_' + id).remove()
    })
  } else {
    var bmLinks = $('#bookmarklink_' + type + '_' + id + ', .bookmarklink_' + type + '_' + id)
    var oldName = newName && bmLinks.html()
    ajax.get('bookmarks.php?action=remove&type=' + type + '&auth=' + authkey + '&id=' + id, function () {
      bmLinks.parent('.remove_bookmark, .add_bookmark').toggleClass('add_bookmark remove_bookmark')
      if (newName) {
        bmLinks.html(newName)
      }
      bmLinks
        .removeAttr('onclick')
        .off('click')
        .click(function () {
          Bookmark(type, id, oldName)
          return false
        })
    })
  }
}
